trace of matrix 中文意思是什麼
trace of matrix
解釋
矩陣的跡-
Abstract : by utlizing abundant local resource of ytirium and combining the characteristics of magnesium, barium, calcium and silicon, a sort of composite nodulizer - ytirium - based heavy rare earth nodulizer was developed which is characterized by its good desulphurizing and deoxidizing rate effect, excellent effect to neutralize anti - nodulizing effect of trace elements, strong nodulizng effect and degeneration - resistance, good effect to fine matrix structure, decreased chilling tendency and wide scope of applicatiom using this nodulizer to produce some important castings such as water - cooled wall of blast furnace and roller could increase mechanical properties of central area and casting yield
文摘:利用江西省豐富的釔基重稀土，結合鎂、鋇、硅、鈣等元素的特性開發了釔基重稀土復合球化劑，該球化劑具有脫硫、脫氧、抗干擾元素、球化和抗球化衰退能力強，細化基體組織，白口傾向小，適用范圍寬等特點，應用於高爐冷卻壁，軋輥等關鍵鑄件上可提高心部力學性能和工藝出品率。 -
Standard practice for preparation of natural - matrix sediment reference samples for major and trace inorganic constituents analysis by partial extraction procedures
使用部分萃取法的大量和微量無機成分分析用天然雜礦石沉澱物標樣制備的標準實施規范 -
As a result, we are not only unable to obtain the optimal prediction in general cases but incapable of finding the necessary and sufficient conditions as well. considering linear and o - linear predictable variables, the author investigates optimal prediction problems by the trace of matrix. a few necessary conditions are derived and accordingly optimal linear and optimal o - linear unbiased predictors, which are unique with probabitity one, are obtained respectively by the author
對於一類線性可預測變量和-線性可預測變量，作者在矩陣跡意義下研究了一般增長曲線模型中最優預測問題，找到了其存在最優預測的幾個必要條件，並在給定的條件下分別得到了最優線性無偏預測和最優-線性無偏預測，而且還證明了它們在幾乎處處意義下的唯一性 -
Results show that triple reflection signal and quintuple reflection signal of ytype and s type are less 12db, 16. 67 db and 11. 8 db, 17. 3 db than that of " - ' " type saw mass sensor device. experiment results show that insertion loss ( about 14db ) of the devices in center frequency is close to the theoretical value ( about 16db ) developed by p matrix representation. sensing characteristics of y type and s type saw mass sensors have been also tested and analysed in detail. ethanol and pure water mixed solution containning trace nacl is titrated into mass loading area of y type and s type saw mass sensors devices to detect their mass loading sensitivities
本文對y型和s型雙聲路saw質量傳感器件的傳感特性進行詳細測試分析，在y廠書型和s型雙聲路聲表面波器件的質量沉積區中滴定含有微量naci溶質的乙醉和水的混合溶液，以測試器件的質量沉積效應靈敏度，它們分別約為2967ppm . cm丫夢g （ y型）和3一15ppm . emz /協g （ s型） ，與理論值38 . 93ppm . emz / 「 g相近，拼處于國內外同型和s型雙聲路聲表面波器件的頻率一溫度特性幾，其單聲雙聲路相對溫度系數約為10一12hz / ，處于國內外同類研究先進水平。 -
Terrain slope information can be drawn from polarimetric synthetic aperture radar ( sar ) two - dimensional image, so that three - dimensional image can be generated. it differs from two - pass or repeated trace insar that uses interference phase method to obtain topography height. the p - sar three - dimensional image technology uses the stokes matrix formed by two - dimensional images resolution cells, then applying polarimetric synthesize to stokes matrix can produce polarization signature of the scatter cross - section a - (, x ) for any ( ellipticity ) and ( orientation ) polarization state
這種方法不同於重復軌道和雙通道insar系統，不是利用干涉法提取高度信息，而是利用極化sar二維圖像各分辨單元的stokes矩陣，通過極化綜合估計每個分辨單元的共極化散射特性和交叉極化散射特性（極化指紋） ，以及共極化散射特性最大值時對應的極化橢圓度x利極化橢圓方向角，求解地形的高度輪廓。 -
A electron trace modeling program, vbgun has been programmed using fortarn language. the work and novelty of this thesis includes the several aspect following. 1. particularly investigated the mathematic model of boundary integrating equation method and the constructing of matrix equations, including dispersing boundaries, compartmentalizing grids, voltage calculating and reserving
本論文的主要工作和創新性體現在以下幾個方面: 1 .詳細討論了邊界積分方程法計算電磁場的數學模型和矩陣積分方程組的建立方法，對邊界的離散、網格的劃分、電位的計算和貯存等過程分別進行了討論。 -
During the review / inspection of the system test cases, the matrix can also be used to trace the requirement / specification of the product to the test cases
在系統測試用例的復查/審核過程中，矩陣還能用來檢查產品的需求說明書與測試用例的一致性。
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